## Tags » Subtraction

#### Ex: Subtracting Rational Expressions (Factoring With A Not 1)

This video provides an example of how to subtract two rational expressions.  The problem requires factoring trinomials with “a” not equal to 1.

III. Algebra Videos

#### First Grade Math Warm-Ups: Week of 12-8 to 12-12

So excited how these are working out, and how they lead to such great conversations during our math time.  So easy to get math brains thinking early in the day and then letting it simmer all day.  229 more words

Classroom

#### 6 Days!

WOW!  Shockingly, we only have 6 school days until Winter Break!  Where did the time go during the first semester?!?  Wherever it went . . . 900 more words

Conversation Starters

#### Ex: Use Color Counter to Show Subtracting a Negative is the Same As Adding a Positive

This video provides an example of how to use color counters  to show subtracting a negative is equivalent to adding a positive.

Algebra

#### Honest Equations

Experience
Plus
Quick wit
Multiplied by
Beauty
Equals
Attraction

Wealth
Plus
Beauty
Equals
Satisfaction

Beauty
Minus
Integrity
Minus
Anything else…..
Well, that’s subtraction

Beauty isn’t everything.

#### I Beat Subtraction With Regrouping

Oh, subtraction…how it can be a thorn in my side! This year subtraction has been a difficult battle for me. I have been an advocate for student invented strategies for years now and have used them in my classroom. 580 more words

Standard Algorithm

#### Selling What You Don’t Own

Neal Pollard

One of the more ingenious and amusing entrepreneurial moves I’ve ever heard is the company that offers to sell you a star.  For a price, you can buy a star and name it for a loved one.  356 more words

Christ